The stack trace indicates that you are extending org.apache.struts.scaffold.BaseAction rather than just Action.
I'm not familiar with the scaffold package - perhaps the forward "success" has a special meaning within scaffold? Paul > -----Original Message----- > From: Caroline Jen [mailto:[EMAIL PROTECTED] > Sent: Friday, May 14, 2004 3:55 PM > To: [EMAIL PROTECTED] > Subject: NullPointerException - findSuccess(Unknown Source) > > > Need your expertise to diagnose the problem. > > I have a java class ListThread.java that extends > Action. This java class simply calls a couple of > helper classes to access my database. In the end of > the ListThread.java, it is a standard statement: > > return ( mapping.findForward( "success" ) ); > > > I have not yet prepared a JSP to be displayed in the > browser after ListThread.java completes its tasks; > therefore, upon completion, I temporarily wants the > application to be forwarded to my welcome page. (My > welcome page works fine.) > > Because the ListThread.java does not really submit a > form, I simply put name="articleForm" in the > struts-config.xml file. I have substituted with other > forms for testing purpose. Nonetheless, I always got > Status 500 error: > > ----- Root Cause ----- > java.lang.NullPointerException > at > org.apache.struts.scaffold.ParameterAction.findSuccess(Unknown > Source) > at > org.apache.struts.scaffold.BaseAction.execute(Unknown > Source) > at > org.apache.struts.action.RequestProcessor.processActionPerform > (RequestProcessor.java:484) > at > org.apache.struts.action.RequestProcessor.process(RequestProce > ssor.java:274) > ............. > ............. > > My struts-config.xml looks like: > > <action > roles="administrator,editor,contributor" > path="/message/ListThreads" > type="org.apache.artimus.message.ListThread" > name="articleForm" > scope="request" > validate="false"> > <forward > name="success" > path="/signin/Welcome.jsp"/> > </action> > > And here is my ListThread.java: > > import LOTS OF PACKAGES AND CLASSES; > > public final class ListThread extends Action > { > public ActionForward execute(ActionMapping mapping, > ActionForm form, > HttpServletRequest > request, > HttpServletResponse > response) > throws Exception > { > > String memberName = request.getRemoteUser(); > > // for sort and order stuff > String sort = request.getParameter( "sort" ); > String order = request.getParameter( "order" ); > > if ( sort.length() == 0 ) sort = > "ThreadLastPostDate"; > if ( order.length()== 0 ) order = "DESC"; > > int offset = 0; > int rows = > MessageInboxConfig.ROWS_IN_THREADS; > offset = Integer.parseInt( request.getParameter( > "offset" ) ); > rows = Integer.parseInt( request.getParameter( > "rows" ) ); > > ListThreadHandler lthandler = new > ListThreadHandler(); > ListPostHandler lphandler = new > ListPostHandler(); > > int totalThreads = > lthandler.getNumberOfThreads_forReceiver( memberName > ); > if ( offset > totalThreads ) > { > throw new BadInputException( "The offset is > not allowed to be greater than total rows." ); > } > > Collection beans = > lthandler.getThreads_forReceiver_withSortSupport_limit( > memberName, offset, rows, sort, order ); > > SiteUtil.prepareNavigate( request, offset, > beans.size(), totalThreads, > MessageInboxConfig.ROWS_IN_THREADS ); > int totalPosts = > lphandler.getNumberOfPosts_forReceiver( memberName ); > > request.setAttribute( "ThreadBeans", beans ); > request.setAttribute( "TotalThreads", new > Integer( totalThreads ) ); > request.setAttribute( "TotalPosts", new Integer( > totalPosts ) ); > > return ( mapping.findForward( "success" ) ); > > } > } > > > > > > __________________________________ > Do you Yahoo!? > SBC Yahoo! - Internet access at a great low price. > http://promo.yahoo.com/sbc/ > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > ********************************************************************** Axios Email Confidentiality Footer Privileged/Confidential Information may be contained in this message. 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